Stel MIGGY 171, Instruction Manual

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6918900030
12
PREPARING FOR WELDING
(TIG
)
1) Respect the indications given previously
concerning primary connection and installation.
2) Connect the earth cable to the positive socket of
the machine
3) Connect the torch coupling to the centralised
euro
socket of the machine
3) Check the position of the polarity changing
cable, opening the side door: for TIG welding it
must be in position "-".
4) With the SELECT MODE button to select the
TIG mode, led TIG mode selected turned on.
5) Connect the gas cylinder (Argon) to the device
provided on the rear of the generator.
6) Set the welding current
with the current
regulating potentiometer
7) Set the SLOPE-DOWN time with the function
regulating potentiometer
PREPARING FOR MIG
WELDING WITH GAS
1) Respect the indications given previously
concerning primary connection and installation.
2) Connect the earth cable to the negative
socket
of the generator.
3) Insert the connector of the MIG torch in the
centralised euro socket and tighten the ring nut.
4) Connect the gas cylinder (MIX) to the coupling
provided on the rear panel of the machine.
5) Check the position of the polarity changing
cable, opening the side door: for MIG welding
WITH GAS it must be in position “+”.
6) Load the wire, opening the side door and fitting
the bobbin on the reel provided.
7) Insert the wire in the wire feeder, making it
adhere to the race of the roller (ATTENTION: the
roller has two races because by turning it over it
can be used for another size of wire). When
changing the section of the wire it is necessary to
change the rollers and the current supply pipe (that
is the end part of the torch from which you can see
the wire protruding).
8) Unscrew the outside end of the torch (nozzle)
and the current supply pipe to facilitate the
passage of the wire.
9) Unwind the torch cable so that the wire makes
the least possible number of curves .
10) Insert the plug in a suitable power socket.
11) Close the pressing roller, switch on the
machine turning the line switch to “ON” position,
press the wire advance button to make the feeding
motor run until the wire comes out of the torch
(keep the side door closed while performing this
operation). Switch off the machine, turning the line
switch to “OFF” position.
12) Screw the current supply pipe and the nozzle
back on.
13) Regulate the friction of the wire feeder (a more
accurate regulation will be possible after a few
tests).
14) Set the post-gas value with the screw
potentiometer
15) Set the burn-back* value with the screw
potentiometer
16) With the SELECT MODE button to select the
MIG 2t or 4t mode, led MIG 2t mode selected
turned on led MIG 4t mode selected turned on
*: The
burn-back is a delay in switching off the
welding arc with respect to the stopping of the wire
feeding device. With the potentiometer set at “0” the
wire feeder stops at the same time as when the arc
goes out . For high welding currents it is advisable to
set the value “0” (make a few tests).
Incorrect regulation of this parameter may lead to:
-
Burn-back too low : at the end of welding,
the piece of wire protruding from the torch is too long;
it is therefore difficult to resume welding.
-
Burn-back too high: at the end of welding,
the piece of wire protruding from the torch is too short
and in extreme cases the wire may stick to the current
supply pipe.
*: The burn-back is a delay in switching off the
welding arc with respect to the stopping of the wire
feeding device. With the potentiometer set at “0” the
wire feeder stops at the same time as when the arc
goes out . For high welding currents it is advisable to
set the value “0” (make a few tests).
PREPARATION FOR MIG
WELDING IN SYNERGIC
MODE
1) Respect the indications given previously
concerning primary connection and installation.
2) Synergic Programs are designed for the welding
of Mild Steels with either 0,6mm or 0,8mm
diameter solid wires.
3) Select Synergic Mode by pressing Synergic
Mode selection button 15. For wire diameter
selection continue by 'dabbing ' the button to select
either 0,6mm wire - light shines red, or 0,8mm wire
- light shines green
4) Select material thickness to be welded by
regulating
the Potentiometer 13. Scales
surrounding the Potentiometer 13. for material
thickness are shown as Red for 0,6mm wire and